Apparatus for the manufacture of paper



Dec. 20, 1955 HAYES ZJZK MZ APPARATUS FOR THE MANUFACTURE] OF PAPER Filed Sept. 18, 1952 INVENTOR.

United States Patent APPARATUS FOR THE MANUFACTURE OF PAPER Millard F. Hayes, Hudson Falls, N. Y., assignor to The Sandy Hill Iron & Brass Works, Hudson Falls, N. Y., a corporation of New York Application September 18, 1952, Serial No. 310,247

This invention relates to improvements in paper manufacture and is directed more particularly to sheet formation on the Fourdrinier wire of a paper making machine.

According to novel features of the invention, breaking up of flocculation of paper making fibers is accomplished so as to provide substantially complete suspension of individual fibers thereby to obtain improved closeness of formation and generally improved characteristics in paper formation.-

The novel objects of the invention consist of subjecting the paper making stock on the wire to vibrations of high frequency and low amplitude.

It has been discovered that a suitable vibratory action is accomplished in a broad way by passing the stock carrying Fourdrinier wire at the wet end of the paper machine across a transverse vessel holding water and imparting vibrations to the water. The water level is substantially equal to the upper side of the stock on the wire so that the fibers of the stock on the Wire passing over the vessel are subjected to the vibrating action. in this way, the stock is broken up and distribution of individual fibers is greatly enhanced. The location of the vessel along the wire will be such that the fibers of the stock on the wire will be subjected to the vibrating action.

All of the above objects I accomplish by means of such structure and relative arrangements of parts thereof as will fully appear by a perusal of the description below and by various specific features which will be hereinafter set forth.

To the above cited and other ends and with the foregoing and various other novel features and advantages and other objects of my invention as will become more readily apparent as the description proceeds, my invention consists in certain novel features of construction and in the combination and arrangement of parts as will be hereinafter more particularly pointed out in the claims hereunto annexed and more fully described and referred to in connection with the accompanying drawings wherein:

Fig. l is a plan view of vibrating apparatus embodying the novel features of the invention associated with the side rails and the Fourdrinier wire of a paper making machine;

Fig. 2 is a transverse sectional elevational view on the line 2-2 of Fig. 1; and

Fig. 3 is a longitudinal sectional elevational view on the line 33 of Fig. 2.

Referring now to the drawings more in detail, the invention will be fully described.

Elongated side rails are represented by 2 which in a Fourdrinier paper making machine extend along the wet end of the machine. Table rolls, not shown, are supported by the rails 2 for rotation and extend transversely of the rails and support the Fourdrinier wire which carries the paper making stock consisting of paper making fibers suspended in water.

Between certain of the table rolls there are suction "ice boxes and the apparatus of this invention is located beneath the wire so as to. act on the paper making stock to the best advantage, that is, where the relationship of the fibers in the water is acted. upon by the apparatus.

Brackets 4 are carried by the rails. and may be secured thereto against movement by set. screws 6 or. the like. These brackets may be. secured. at any location along the rails.

Plates 8 are pivoted at 10 in. the brackets and have outer portions 12 through which screws or bolts 14 extend that are in engagement with the brackets. Inner supporting portions 16 depend from the plate.

An elongated vessel. 18 extends transversely beneath the wire and has opposite and adjacent sides 20 and ends 22 which may be formed from wood. 7

Secured together side and end metal. plates 24 and 26 are secured within the side and end walls 20 and2'2 as by screws 28 or the like and a bottom wall 30 is secured to the plates 24 and 26. 7

End supports 32 are secured to the bottom. of the vessel and are secured to the feet 16 of the: plates by bolts 34.

The bottom wall 30 will be formed from sheet metal of such thickness and characteristics that it is sufiiciently flexible as' to be moved up and down through small distances at high frequency. The bottom wall 30 may be secured to the side and end walls by welding such as indicated by 25.

An elongated beam-like member indicated by 36 has secured together side and end members 38 and 40. Upper edges of the side members 38 are secured to the lower wall 30 of the vessel as by welding at 42 and is secured to a plate 44 at its lower side as by welding at 46.

An electrically operating vibrating device as indicated by 50 has an upper flange 52 secured to the plate 44 by bolts 54.

An opening 56 in the bottom wall of the vessel is connected by a pipe or conduit 58 to a chamber 60. Said conduit will be flexible so as not to interfere with movements of the bottom wall of the vessel. v

The vessel 60 has side walls 62 and a bottom wall 64 provided with an outlet 66. A bafie 68 extends between opposite walls of the chamber and a gate 70 is slidable up and down between said baffle and guides 72.

A strut 74 secured to the chamber 60 has a nut 76 rotatable therein which is internally threaded for an adjusting screw 78 having its lower end secured to gate 70. The screw may be manipulated to move the gate up and down.

The vibrating device 58 is of such a character that when energized it vibrates a very high frequency through a short distance, that is the vibrations may be at the rate of several thousand per unit of time and moves the botltlom wall 30 up and down a few thousandths of an mc In operating the apparatus, the Fourdrinier wire carries the paper stock consisting of fibers suspended in water along and over the vessel 18. The vessel being filled with water, there is a jointure of the water in the vessel and of the stock on the wire. As the bottom of the vessel is vibrated, pulses or waves are transmitted through and by the water to the stock on the wire.

The pulses are of high frequency and of relatively low amplitude so that the water acts on the fibers to break up flocculation and provide individual fiber suspension and thereby greatly improve paper formation.

The wire in paper making will vary in speed from a few hundred feet per minute to a thousand feet or more and the width of the vessel will be relatively narrow for locating along the wet end of the machine be tween or adjacent certain table rolls or suction boxes as paper be considered in all respects merely as being illustrative and not as being restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all modifications and variations as fall within the meaning and purview and range of equivalency of the appended claims are therefore intended to be embraced therein.

What it is desired to claim and secure by Letters Patent of the United States is:

1. Apparatus for imparting vertical vibrations to paper making stock consisting of fibers suspended in water on a horizontally traveling Fourdrinier wire comprising in combination, vertical end and elongated side Walls and a horizontal bottom wall forming a vessel for water having a continuous elongated open upper side, upper edges of said side walls adapted to support said traveling wire with the upper open side of the vessel extending across said wire from side to side thereof whereby water in said vessel and of the stock may be in contact through said wire, said bottom wall being relatively thin and flexible and adapted to be vibrated vertically whereby vibrations imparted to water in the vessel are transmitted vertically through said wire to the water of the stock thereon, and

means to vibrate said bottom wall vertically at high frequency and low amplitude.

2. The combination in a paper making machine of a horizontally traveling Fourdrinier wire for carrying paper making stock consisting of fibers suspended in water with apparatus for imparting vibrations to said stock comprising, vertical end and elongated side walls and a bottom wall forming a vessel for water disposed beneath said wire having a continuous elongated open upper side beneath said wire from side to side thereof and upper edges of said side walls supporting said wire whereby water in said vessel and the stock on said wire are in contact through said wire, said bottom wall being relatively thin and flexible and adapted to be vibrated vertically, and vibrating means for vibrating said bottom wall at high frequency and low amplitude for vertically vibrating water in the vessel for transmission of vibrations through the wire to stock on said wire.

References Cited in the file of this patent UNITED STATES PATENTS 1,196,845 Davies Sept. 5, 1916 1,841,702 Berry Jan. 19, 1932 2,028,952 Reimer Jan. 28, 1936 2,076,991 Holgersson etal Apr. 13', 1937 2,124,028 Charlton July 19, 1938 2,562,545 Gogolick July 31, 1951 

